The model 3d of aquifer using vertical electrical sounding (VES) method

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Abstract

University of Bengkulu (UNIB) is an area that is located geologically close to the beach, causing aquifers located around campus is still influenced by seawater. This is indicated by several wells containing brackish water. The objective of this research is to map the thickness of the aquifer layer suspected of being intruded by seawater using Geoelectric VES 1D with Schlumberger configuration method at University of Bengkulu. This study was measured by using Geoelectric Resistivity and IP M MAE X612-EM with the VES (Vertical Electrical Sounding) method, which was carried out on 20 tracks, that were 10 tracks around the well bore and 10 other trails scattered inside campus area with length of 200 m. 1D data were processed by using Progress 3.0 software and 3D models processed by Voxler 4. Based on the results, this study indicated that the thickness of the brackish water layer reaches 10 m to 27 m, at the western part of University of Bengkulu the depth is located at 55 m to 82 m below the surface, and the eastern part of University of Bengkulu the depth is located at 20 m to 82 m below the surface with the resistivity from 1.38 Ωm-4.90 Ωm caused by swamps around the campus. The unconfined aquifer layer is located at a depth of 5 m to 32 m and the confined aquifer layer is located from a depth of 43 m. Type of aquifer layer in the form of groundwater with resistivity ranging from 5.20 Ωm-98.87 Ωm.

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Suhendra, Halauddin, Zul, B. C., & Angglena, M. (2021). The model 3d of aquifer using vertical electrical sounding (VES) method. In AIP Conference Proceedings (Vol. 2320). American Institute of Physics Inc. https://doi.org/10.1063/5.0037699

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